A bright yellow tennis ball floats at the center of a geometric composition of deep blue and teal triangles arranged in a dynamic pinwheel pattern against a cream ground. The stylized illustration captures the energy of the sport with clean lines, bold color blocking, and a retro modernist sensibility that evokes the golden age of sports graphics. Printed on smooth white card stock and made to order, artwork on the front, blank inside, envelopes included in every set. A handwritten note that arrives as an independent artist's work.